The Oker–Bad Harzburg railway is a branch line between Oker and Bad Harzburg on the northern edge of the Harz mountains in Germany. It was opened on May 1, 1912.

The present-day Heudeber-Danstedt–Vienenburg railway is a 32 kilometre long main line, that serves the northern edge of the Harz Mountains in central Germany. Its main role is the handling of tourist